001/*
002 *  Copyright 2010 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.web.cache;
017
018import java.util.Map;
019
020import javax.jcr.Session;
021
022import org.ametys.core.observation.Event;
023import org.ametys.core.observation.Observer;
024import org.ametys.web.ObservationConstants;
025import org.ametys.web.repository.page.Page;
026import org.ametys.web.repository.site.Site;
027
028/**
029 * {@link Observer} for observing page move in order to 
030 * invalidate cache on front-office.
031 */
032public class InvalidateCacheOnRobotsChangeObserver extends AbstractSiteCacheObserver
033{
034    @Override
035    public boolean supports(Event event)
036    {
037        return event.getId().equals(ObservationConstants.EVENT_ROBOTS_CHANGED);
038    }
039    
040    @Override
041    protected Site _getSite(Event event)
042    {
043        Map<String, Object> args = event.getArguments();
044        
045        Page page = (Page) args.get(ObservationConstants.ARGS_PAGE);
046        return page.getSite();
047    }
048    
049    @Override
050    protected void _internalObserve(Event event, Site site, Session liveSession) throws Exception
051    {
052        if (getLogger().isInfoEnabled())
053        {
054            getLogger().info("Robots changed: " + event + ", invalidating cache");
055        }
056
057        CacheHelper.testWS("/_invalidate-page/" + site.getName() + "/robots.txt", getLogger());
058        CacheHelper.testWS("/_invalidate-page/" + site.getName() + "/sitemap.xml", getLogger());
059    }
060}